8716569993 has 6 divisors (see below), whose sum is σ = 12590601114. Its totient is φ = 5811046656.

The previous prime is 8716569989. The next prime is 8716570019. The reversal of 8716569993 is 3999656178.

It can be written as a sum of positive squares in only one way, i.e., 5722619904 + 2993950089 = 75648^2 + 54717^2 .

It is not a de Polignac number, because 8716569993 - 2² = 8716569989 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8716569993.

It is not an unprimeable number, because it can be changed into a prime (8716569493) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 484253880 + ... + 484253897.

It is an arithmetic number, because the mean of its divisors is an integer number (2098433519).

Almost surely, 2^8716569993 is an apocalyptic number.

It is an amenable number.

8716569993 is a deficient number, since it is larger than the sum of its proper divisors (3874031121).

8716569993 is a wasteful number, since it uses less digits than its factorization.

8716569993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968507783 (or 968507780 counting only the distinct ones).

The product of its digits is 22044960, while the sum is 63.

The square root of 8716569993 is about 93362.5727633938. The cubic root of 8716569993 is about 2058.0150226841.

The spelling of 8716569993 in words is "eight billion, seven hundred sixteen million, five hundred sixty-nine thousand, nine hundred ninety-three".